Koto / Information
Koto Terms
Effective 5 September 2026
These terms govern Koto's online Japanese-learning services. The Koto iOS app is also licensed under Apple's Standard Licensed Application End User License Agreement. Rights that cannot lawfully be excluded continue to apply.
Koto is operated by Matthew Evan. Questions can be sent to kotoapp.team@gmail.com.
Eligibility
Koto's invited beta is intended for adults aged 18 and over. By using an online Koto account, you confirm that you are at least 18 and permitted to use the service where you live. This audience restriction is separate from Apple's content-based App Store age rating.
What Koto provides
Koto provides Japanese learning, writing assistance, translations, pronunciation, roleplay, and conversational practice. Saved expressions, notes, review, Kana, existing chats, and available on-device pronunciation can remain available locally. Online AI and Google Chirp 3 HD speech require a network connection, eligible access, current consent, available capacity, and applicable beta limits.
AI replies and translations can be incomplete or wrong. Review important messages before sending them. Do not rely on Koto for professional, medical, legal, financial, emergency, or safety-critical advice.
Privacy and permission for online processing
Koto's Privacy Policy explains what stays on your device and when text, images, audio, or related technical data may be sent to Koto's service providers. Online AI and cloud speech do not run until the required in-app permission is accepted. Withdrawing permission stops new provider dispatches on that device and preserves available local learning. In an enabled authenticated build, a confirmed account withdrawal also stops later dispatches for that account across devices.
No live paid subscription
Koto does not currently offer a live paid subscription. No Koto Plus product, paid trial, renewal, purchase restoration, or customer allowance is active under these terms. Prices and usage limits shown in internal design previews are working assumptions only and cannot charge you.
If Koto later introduces a subscription, the App Store product page and in-app purchase screen will show the localized price, billing period, included online use, renewal terms, any trial, Restore Purchases, and links to the then-current privacy policy and terms before purchase. These terms will be updated before a paid offer is activated.
Accounts, deletion, and local data
Account features vary by beta build. In an account-enabled build, Koto presents a separate server-account deletion control and does not describe deletion as complete until the server confirms it. Deleting an online account, deleting a local item, and uninstalling the app are different actions. Server-account deletion does not automatically erase the local learning library, and Koto does not promise to recover local data removed from the device.
Acceptable use
Do not use Koto to break the law, harm or harass others, violate intellectual-property or privacy rights, impersonate another person, evade service limits, probe or interfere with the service, automate abusive traffic, or submit content you are not permitted to process. Koto may restrict online access when reasonably necessary to protect users, providers, or the service.
Availability and changes
Online services may be interrupted, rate-limited, or unavailable and are not guaranteed to be error-free. Koto may change or discontinue beta features. Material changes to data handling or any future commercial offer will be disclosed as required by applicable law and Apple's rules.
Support
For support, see Koto Support or email kotoapp.team@gmail.com. There is no guaranteed response time during the invited beta.